Nothing about the issue says she is using Phoenix life fire or anything Phoenix related. Phoenix life fire? Is that a term you made up? She is using her TK, which she's always had . Her eyes were firey but her power signature was pink/purple and there is no Phoenix raptor. You are seeing something that you want to see thats not there. Rachel was being powerful as she used to be, before previous writers nerfed her. She didnt do anything in the issue Phoenix related that was beyond her normal capabilities